<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>这是一个表单页面</title>
</head>
<body>
    <form method="post" action="ServletDemo2">
        <input type="text" name="firstName" placeholder="请输入firstName">
        <br>
        <input type="text" name="secondName" placeholder="请输入secondName">
        <br>
        <input type="submit" value="提交数据">

    </form>
</body>
</html>